Receptacle for magnetizable record strips



Sept. 12, 1950 L. M. POTTS 2,522,463

REdEPTACLE FOR MAGNETIZABLE RECORD STRIPS Filed June 11, 1947 2Sheets-Sheet 1 IIIHIHIIHIIIIIII ll 4 FIG. I r4 IIIIIIIIIIl'lllll'lllllll l l l lll/ INVENTOR LOUIS 'M. POTTS, DECEASED MARTHA W.C. POTTS, EXECUTRIX ATTORNEY L. M. POTTS 2,522,463

RECEPTACLE FOR MAGNETIZABLE RECORD STRIPS Sept. 12, 1950 Filed June 11,1947' 2 Sheets-Sheet 2 FIG. 4

M w 28 L ss T v IIIHIIIIL FIG. 3

000090000 OOODOOOOUOOOOOOOOOOQOOOO oooo2\ oooo OODOOOOOOOOOOOOOOOOOOOOOINVENTOR LOUIS M. POTTS, DECEASED MARTHA w. c. POTTS, ExEcuTmx ATTORNEYPatented Sept. 12, 1950 UNITED AT IPA-TENT.

, PT bLE-GNETIZABLE Louis M. Potts, deceased, late of Evanston, 111.,

1 byMartha ;W. C. Potts, executrix, Evanston, 111., assignor to TeletypeCorporation, Chicago, 111., a corporation of Delaware Application June11, 1947, Serial No. 754,033

1' comma (01. 346- 22) 1 This invention relates to, magnetic recordingsystems and more particularly to an arrangement for makin magnetic coderecordings on magnetic plates.

The primary object of the invention is to provide a device for preparinga magnetic record on individual steel cards.

. Another object of the invention is to produce on a, steel card amagnetized record comprising a plurality of transverse rows ofmagnetized areas, and to feed in a novel manner unmagnetized cards intorecording position.

Briefly, the arrangement according to the present invention comprises amagnetic card recorder and automatic feeder from a stack of cards. Thesystem provides for the transverse magnetization of the card through theuse of .five magnets, each code impulse being a northsouth orsouth-north magnetization in a pair, depending on whether a marking orspacing condition exists. The five magnets are eachcontrolled by amagnet controller contact while a card feed magnet is also controlled bya contact.

The controller contacts could be operated by having a set of code bars,as disclosed in copending Potts application SerialNo. 755,446 filed June18, 1947, control the code controller contacts,

and the universal bar control the feed controller The foregoing andother objects and features of the present invention will be more fullydescribed in the following description when considered in the light oftheaccompanying drawings, wherein:

Fig. 1 is an elevational view of the device according to the presentinvention with certain Fig. 4 is a schematic diagram of the electricalcircuit employed with the device ofthe present invention. a .1

Having reference to Figs. 1 and 2 of the drawin'gs, wherein similarreferencev characters represent similar parts throughout the severalviews, the device according to the invention comprises a pair of sideplates II and I2 (Fig.

2) in which are journaled for rotation the ends of two shafts I3 and I4.A stud shaft I5 is carried in plate I2 intermediate the shafts I3 andI4. Fixed to shafts I3, I4, and I5, externally of side plate I2, aregears I6, I1, and I9, respectively, of such diameter that the shafts I3,I4, and I5 rotate at the same speed and make one revolution while a cardor ticket I9 is advancing for its full length.

Fixedly mounted on shaft I4 and positioned adjacent the inside faces ofside plates II and I! are a pair of sprocket feed wheels 2I and 22 whichare adapted to cooperate with marginal rows of feed holes in the cardI9. Shaft I3 is also provided with a pair of sprocket feed wheels 23 and24 positioned in alignment with the .corresponding sprocket wheels 21and 22 and with the marginal feed holes. 25 and 26 in the card I9. Aratchet 21 is fixed to the shaft I4 and is provided with teeth having anangular pitch corresponding to the spacin of the feed holes .25 and 26such that for each unit step imparted to the ratchet a, correspondingunit step will be imparted to the card I9. As observed in Fig. 3, a rowof code marks is aligned with the feed holes 25 and 26. Associated withthe ratchet wheel. 21 is a feed pawl 28 pivotally carried at-the ex-,-,tremity of a lever 29 pivotally mounted on a suitably located pivot 3|.A spring 32 normally biases the pawl 28 toward the periphery of theratchet wheel 21. 4 The lever 29 is provided with an armature .33 whichis adapted to coact with the core of an electromagnet 34 appropriatelymounted onv a bracket 35 in the present device. When the magnet 34 isenergized, the pawl 28 is advanced to engage the next tooth of theratchet 21; and

when the magnet 34 is de-energized, a, spring 36 attached to lever 29,operates the lever 29 counterclockwise (as viewed in Fig. l) to advancethe ratchet wheel 21 one tooth-or angular step in a counterclockwisedirection. On the, shaft I3 there is fixed a star wheel 31 correspondingin number of angularly spaced teeth to the ratchet wheel 21. Star wheel31 is adapted to be engaged by a jockey or detent member 39 so astoaccurately locate the card I9 for impressing a magnetic record thereon.

A cam disc 39 is fixed to the shaft I4 and is positioned between thesprocket wheel 2I and the side plate I2. Cam disc 39 is provided on. itsperiphery with a cam notch 4| and at thebottom of the notch 4| andsecured to theiace of the cam disc 39 is a small permanent magnet 42. Acam disc 43 of like size and characteristic is also fixed to the shaftI4 between the sprocket wheel 22 and the side plate II.

The device according to the present invention also is provided with amagazine or hopper 44 comprising the side plates II and I2, a rear plate45 and a front plate 46. The magazine 44' carries the blank forms orsteel cards l9 which are supported by rollers 4'! and 48. The feed pins49 on the sprocket wheels 2| and 22 engage the feed holes 25 and 26 inonly the lowermost one of the cards or steel plates l9. The forward endof the plate I! is fiaredas at 54, to cooperate with the cam disc 39 and43.

When the notches 4| are rotated into registry simultaneously with theflared portions 5| of the lowermost plate [9 the permanent magnets 42pull down the front end of the plate l9 onto the sprocket wheels 2| and22, whereupon the pins 49 engage the feed holes 25 and 26. the sprocketwheels 2| and 22 are rotated by the stepping action of the steppingmagnet 34 through pawl 28 and ratchet wheel 21, the lower most card [9is ejected from the magazine, and the next lowermost form or card I9 ismoved to Then, as

the left, and after a very small amount of motion the forward endthereof is held by the front plate 48. The relation between the notch 41and the length of the flared portion 5! is such that the advancing card[9 will not be lifted from the pins 49, but at the proper instant thehigh part of each cam disc will engage the flared portions 5| of thenext lowermost plate [9 and thereby hold said plate out of engagementwith the sprocket teeth 49 until the leading edge of notch 4! has againreached the lower edge of front plate 46.

The new or lowermost card is engaged by the sprocket wheels 2! and 22 isadvanced ina stepby-step manner leftwardly through the guide rollers 52,53, 54, and 55, as indicated by previously ejected card 55, to beengaged by the teeth on sprocket Wheels 23 and 24 and to be therebyadvanced through the recording zone which is located directly under thepole pieces 51 of magnets 58, there being one magnet 58 for each elementof the code; namely, five in the present embodiment. In Fig. 4 is showna schematic circuit arrangement for controlling the magnetic recorderaccording to the present invention. The winding of magnets 58 isconnected to ground, and also over conductors El, 62, 63, 64, and 65 tocontact tongues 66, 61, 68, 69, and T9 in a key board device wherein theslidable code bars could control the contact tongues 56 to- 10. Thecontacts H and 12 associated with each of the tongues 66 to m areconnected to positive and negative battery 73 and 14, respectively. Auniversal contact 151s closed for each key operation to connect positivecurrent from battery 13 over conductor 16 to the card stepping magnet34. The five contact tongues 65 to iii are set for each key operationaccording to the code to be recorded magnetically on the steel card 19(or 58). It will be observed that when a record is made, the magnet 34as well as all of the magnets 55 will be energized at the same time, butmagnets 58', however, will be magnetized in one direction or the otheraccording to the code set up on the tongues 66 to ill and producemagnetized spots on the form as shown in Fig. 3. Magnet 34 is alwaysmagnetized in one direction only.

Having reference to Fig. 3, a steel. card or form is is shown in planview. Card is may be a thin sheet of steel such as thinclo'ck spring 4material, or it may be built up of a sheet of nonmagnetic material and asheet of magnetic material. Since these plates is are to be stacked, theprovision of a nonmagnetic surface on one side is a considerableadvantage, although probably not necessary. The character shown attransverse row 11 is the letter A. The number 1 impulse is representedby an upper mark 18, for example, a north pole, and a lower mark 19representing a. south pole. A spacing condition is represented byopposite marks as, for example, an upper marking 8| representing a southpole and a lower marking 82 representing a north pole in the number 5position.

Although the present invention has been disclosed in connection with aparticular embodiment thereof, it is understood that other equivalentarrangements are contemplated, and that the present invention is limitedonly by the range and scope of the appended claims.

What is claimed is:

1. In combination, a receptacle for magnetizable record strips, saidreceptacle having an opening to facilitate withdrawal of said recordstrips singly, and means cooperably related to said advancing means andsaid opening for seizing the leading end of a record strip to effect thewithdrawal of said strip from said receptacle, said seizing meanscomprising a rotatable disc having a peripheral notch and a permanentmagnet cooperating with said notch, whereby said notch and said magnetare presented cyclically to said opening to magnetically attract arecord strip to initiate withdrawal of said strip from said receptacle.

2. In combination, a receptacle for magnetizable record strips, saidreceptacle having an opening adjacent to the leading edge of the nextstrip to be withdrawn to facilitate withdrawal of said record stripssingly, and means ccoperably related to said advancing means and. saidopening for seizing a record strip to eilect the withdrawal of saidstrip from said receptacle, said seizing means comprising a rotatabledisc having a peripheral notch and a permanent magnet REFERENCES CITEDThe following references are oi record in the of this patent:

UNITED STATES PATENTS 7 Date Number Name 2,247,905 Bryce r July 1, 19412,301,199 Bryce et al l Nov. 10, 1942 2,302,002 Bryce Nov. 17, 19422,333,463 Bryce l- Nov. 2, 1943 2,431,646 Kenney et a1. Nov. 25, 19472,436,829 Roth Mar. 2, 194B

